DL - 4G Americas

Cell‐average and Cell‐edge spectrum efficiency
Base coverage urban environment (Uplink)
• LTE Rel. 8 with SIMO 1x4 fulfills ITU-R requirements
• Further improved performance can be achieved by using additional technology features
(e.g., CoMP 1x4, CoMP 2x4, and MU-MIMO 1x8)
Scheme and antenna configuration
Rel. 8 SIMO 1 x 4(C)
CoMP 1 x 4 (A)
CoMP 2 x 4 (C)
Scheme and antenna configuration
Rel. 8 SIMO 1x4 (C)
CoMP 1 x 4 (C)
CoMP 2 x 4 (C)
MU‐MIMO 1 x 8 (E)
Uplink spectral efficiency (FDD), UMa
ITU‐R
Requirement
(Ave./Edge)
1.4 / 0.03
1.4 / 0.03
1.4 / 0.03
Number of
samples
© 3GPP 2009 Mobile World Congress, Barcelona, 19 th February 2009
© 3GPP 2009 57
www.4gamericas.org February 2011 Page 163
12
Uplink spectral efficiency (TDD), UMa
ITU‐R
Requirement
(Ave./Edge)
1.4 / 0.03
1.4 / 0.03
1.4 / 0.03
1.4 / 0.03
2
1
Number of
samples
9
1
1
1
Cell average
[b/s/Hz/cell]
1.5
1.7
2.1
Cell average
[b/s/Hz/cell]
Cell‐average and Cell‐edge Spectrum Efficiency
High Speed Environment (Downlink)
1.5
1.9
2.0
2.7
Cell edge
[b/s/Hz]
0.062
0.086
0.099
Cell edge
[b/s/Hz]
• LTE Rel. 8 with SU-MIMO 4x2 (even with maximum DL control overhead (L = 3)) fulfills
ITU-R requirements
• Further improved performance can be achieved by using additional technology features
(e.g., MU-MIMO 4x2, MU-MIMO 8x2, and LTE Rel. 8 single-layer BF 8x2)
Downlink spectral efficiency (FDD), RMa
© 3GPP 2009 Mobile World Congress, Barcelona, 19th Scheme and antenna
configuration
ITU‐R
Requirement
(Ave./Edge)
Number
of
samples
Cell average [b/s/Hz/cell]
L=1 L=2 L=3
Cell edge [b/s/Hz]
L=1 L=2 L=3
Rel. 8 SU‐MIMO
4 x 2 (C)
1.1 / 0.04 15 2.3 2.1 1.9 0.081 0.076 0.069
Rel. 8 SU‐MIMO
4 x 2 (A)
1.1 / 0.04 14 2.1 2.0 1.8 0.067 0.063 0.057
MU‐MIMO 4 x 2 (C) 1.1 / 0.04 3 3.9 3.5 3.2 0.11 0.099 0.090
MU‐MIMO 8 x 2 (C) 1.1 / 0.04 1 4.1 3.7 3.4 0.13 0.12 0.11
Downlink spectral efficiency (TDD), RMa
Scheme and antenna
configuration
ITU‐R
Requirement
(Ave./Edge)
Number
of
samples
Cell average
[b/s/Hz/cell]
L=1 L=2 L=3
Cell edge [b/s/Hz]
L=1 L=2 L=3
Rel. 8 SU‐MIMO
4 x 2 (C)
1.1 / 0.04 8 2.0 1.9 1.8 0.072 0.067 0.063
Rel. 8 SU‐MIMO
4 x 2 (A)
1.1 / 0.04 7 1.9 1.7 1.6 0.057 0.053 0.049
MU‐MIMO 4 x 2 (C) 1.1 / 0.04 4 3.5 3.2 3.0 0.098 0.089 0.083
MU‐MIMO 8 x 2 (C/E) 1.1 / 0.04 2 4.0 3.6 3.4 0.12 0.11 0.10
Rel. 8 single‐layer BF
© 3GPP 2009 2.3
8 x 2 (E)
2.1 0.11 0.10 0.093 58
0.062
0.090
0.097
0.076